Earlier quoted context omitted.
Today Dr. Seuss is hate speech. Tomorrow Dr. Seuss apologia will be hate speech. Even from the perspective that this is progress, it’s very fast progress. Today’s white supremacists are last week’s liberals who didn’t update their opinions fast enough.
Dr Seuss isn't hate speech, there are a few racist caricatures in a few of his books, that the owners have stopped printing. A few private platforms have stopped selling those books -- not all of them, neither all platforms nor books. You can still find those books, you just won't be able to buy official reprints from the copyright holder. I am not sure where you'll draw the line if you insist that copyright holders…
The production of an instant moral consensus - so that everyone, all at once, decides freely that it would be incompatible with their values to do what they were doing yesterday - is an exercise of a kind of power. “It’s just private entities doing what they want to do” doesn’t mitigate that.